Hello,

I just maidened my Kadet Senior on floats this morning, and over a period of several flights have noticed an issue with the trim.
First flight, the model was in trim, with the exception of the ailerons. On a low pass, the covering on the bottom of the elevator blew off (never seen anything like that happen before) so I made a quick landing. I recovered it right away and took off again, this time the model needed about five beeps of up trim. Second flight, I needed another 15 or so clicks. By the last flight, the trim setting had changed from +5 to +81 on the digital trim counter.

I am not sure what the issue could be. There is no flex in the elevator, pushrod, or servo installation, and there doesn't seem to be any issue with the servo itself. I left the model and TX powered on for about an hour to see if the trim was wandering on it's own, but it remained centred. The centre of gravity has not changed either.

All flights were flown at about 50% power, servos are Futaba standard S3003, engine is OS FS-70.

Any ideas of where the issue could be?

Thanks!

Graeme

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